PENGARUH TEMPERATUR TUANG DENGAN JENIS MATERIAL Al PADUAN (RONGSOK WAJAN) TERHADAP KEKERASAN HASIL PENGECORAN EVAPORATIVE

Abstract

Abstract TheOobjectiveoofithisoresearch is to know theieffectiof castingitemperatureiwith theokindoof guideomaterial AI alloy junk from pan on hardness (the evaporative foundry result). Theorecyclingiof usedoaluminumois an alternative tooreduce the wasteimaterialofromialuminum. Recycling isoa way ofiprocessingiusedimaterials thatiisostartedowithoselection,icollection, then the process of foundry to create a new product that is more valuable economical. Casting temperature is an variable that can effect the result of foundry where if the casting temperature is low, then there will be a quick freeze before the mold is completely filled. Andoif theocasting temperatureois tooohigh, thenishrinkageicanioccur anditheiporosity value mayoincrease. Thisoresearchoused fourocasting temperatureivariations, namely: 650°C, 700°C, 750°C, and 800°C. The evaporative foundry method uses styrofoam pattern that is piled up into sand mold. Theimetal thatiis castediwill form like styrofoam pattern. The resultiof casting temperatureitesting can effect onihardness. Keywords: Evaporative, Casting Temperature, Aluminium, Pan